210111202111123 has 2 divisors, whose sum is σ = 210111202111124. Its totient is φ = 210111202111122.

The previous prime is 210111202111121. The next prime is 210111202111127. The reversal of 210111202111123 is 321111202111012.

210111202111123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 210111202111123 - 2¹ = 210111202111121 is a prime.

It is a super-2 number, since 2×210111202111123² (a number of 29 digits) contains 22 as substring.

Together with 210111202111121, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 210111202111123.

It is not a weakly prime, because it can be changed into another prime (210111202111121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105055601055561 + 105055601055562.

It is an arithmetic number, because the mean of its divisors is an integer number (105055601055562).

Almost surely, 2^{210111202111123} is an apocalyptic number.

210111202111123 is a deficient number, since it is larger than the sum of its proper divisors (1).

210111202111123 is an equidigital number, since it uses as much as digits as its factorization.

210111202111123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 19.

Adding to 210111202111123 its reverse (321111202111012), we get a palindrome (531222404222135).

The spelling of 210111202111123 in words is "two hundred ten trillion, one hundred eleven billion, two hundred two million, one hundred eleven thousand, one hundred twenty-three".